The short answer is . However, Siemens provides specific options for evaluation:
To explore the software's capabilities without a full installation, you can download official WinCC V7.3 Demo Projects (approx. 1 GB) to see pre-configured SCADA environments. siemens wincc 73 download free
Officially, WinCC 7.3 supports Windows 7, 8, Server 2008/2012. It may run on Windows 10 with compatibility settings, but not guaranteed. For modern OS, use WinCC V7.5 or newer. The short answer is
: You can find manuals and delivery releases for V7.3 on the Siemens Support Site to verify compatibility and hardware requirements. The short answer is . However